Ok, the new buttons are placed
I try to explain myself (my english is very bad, sorry).
New buttons feels good, rugged touch are a right guess. I play for two hours and i'm happy with the result achieved, but is not perfect.
The problem is with the Pad, It's improved too much...but I have little problems with the left direction (sticky, sometimes it does not work well). BUT, the problem may be the plastic membrane...I don't know.
Overall recommended, I'm happy with the change.
By the way...where can I buy new membranes?